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CVE-2026-59569— Android ZCC VPN API method privilege escalation

Quick assessment

Affected
Zscaler Client Connector
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Zscaler 客户端连接器（Zscaler Client Connector）在 Android 和 ChromeOS 上存在输入验证不当的漏洞，攻击者可能借此绕过 Zscaler 的控制策略。

CVSS 8.1 · High

Possible ATT&CK Techniques 2 AI

T1565 · Data Manipulation T1014 · Rootkit
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I. Basic Information for CVE-2026-59569

Vulnerability Information
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Vulnerability Title
Android ZCC VPN API method privilege escalation
Source: CVE Program / CVE List V5
Vulnerability Description
An improper input validation vulnerability in Zscaler Client Connector on Android and ChromeOS allows an attacker to potentially bypass Zscaler controls.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zscaler Client Connector 0 ~ Android: 4.2.0.152 -

II. Public POCs for CVE-2026-59569

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III. Intelligence Information for CVE-2026-59569

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Same Patch Batch · Zscaler · 2026-09-14 · 3 CVEs total

CVE-2026-25687 8.1 HIGH ZCC race condition in ZPA tunnel handler
CVE-2026-59570 7.5 HIGH Android ZCC denial of service

IV. Related Vulnerabilities

Same product: Client Connector
Same vendor: Zscaler
Same weakness: CWE-20

V. Comments for CVE-2026-59569

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